To proselytize means to attempt to convert, to actively recruit. The cult members spent every weekend outside the mall proselytizing anyone who would listen in an attempt to get others to join their group.

Insidious means treacherous, sneaky, intended to entrap or beguile.

Manifest means evident, visible, apparent.

Milieu refers to surroundings, situation, atmosphere, environment.

A glut is a surplus, an excess, an overabundance.

Incongruous means inconsistent, not fitting in, unsuitable to.

To extricate is to free from difficulty, to get out of, to disengage or release from entanglement.